Most asked questions about Mark 2 portable AC exhaust system

How is heat being removed through the Mark 2 AC?

With dual hose venting heat system, the heat is removed from inside to outside through Mark 2 AC. One hose takes in the outside air, then the air flows across the condenser. The heat is transferred to the refrigerant and finally released into the outside air through another hose. The best way to cool down a limited space is to connect the two hoses and separate them slightly outside of the window or outside the door. Both are in the Mark 2 box.

What is the dual hose system?

ZERO BREEZE had integrated a revolutionary dual hose system to draw in fresh outside air and output the hot exhaust air through another hose. Dual Hose allows an intake hose to be used to circulate fresh air inside. No negative pressure in the room. And it provides better performance and maximizes output cooling power.

How to set up the hoses in the window?

The Mark 2 battery package includes two foam adapters. So if you order the battery, you can use the foam adapter to extend the hoses to the outside.

If you have any other questions about Mark 2, please feel free to leave a comment below.


11 comments


  • Sarah DAUGHERTY

    I live.in a great rental cottage built.in 1910. Oddly, my bedroom has a plate glass window, and so in the summer, I am too too hot.

    The rental is historical (long beach, ca) and cannot be modified with windows. I have an air.conditioner in my regular living room window,but I want serious cooling for my bedroom at night. There is a door to the li ving room but no door to exterior of the building in my bedroom. Would zero breeze be helpful …without a window that opens and without an xterior door for hoses?


  • Anonymous

    Dear @Jennifer,Yes,the ZERO BREEZE Mark 2 AC can run on electric as well as battery.


  • Jennifer

    Does the ac run on electric as well as battery


  • ZERO BREEZE

    Hi @Linda Marie, In general, it’s more efficient to have both an intake and exhaust system for proper ventilation in a small space like a camper van. This allows for a continuous flow of fresh air into the space, while removing stale air and excess moisture.

    If you only run the exhaust fan and don’t have an intake system, you may create negative pressure in the van, which can draw in air from undesirable sources like through cracks or vents in the floor or walls. This can also make it harder for the exhaust fan to remove all the stale air and moisture from the van.


  • ZERO BREEZE

    Hi @Cedric Green, hope this blog helps you.
    https://www.zerobreeze.com/blogs/applications-for-mark-2/how-to-use-zero-breeze-mark-2-as-a-heater


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